In a thunderstorm, reach a substantial building or hard-topped vehicle; avoid ridges, isolated trees, water and metal
There is no safe outdoor place within a thunderstorm area. Use a substantial building or hard-topped vehicle; convertibles, motorcycles, tents, pavilions, trees and rock overhangs do not qualify. Avoid open fields, high ground, isolated trees, water and metal fences. If a group cannot reach shelter, spread out. Withdraw when thunder is heard and wait 30 minutes after the last thunder before resuming.
What it takes
Free, but it can interrupt the trip for over half an hour. Turn back even while thunder still sounds distant.
What you may gain
No outdoor location is safe during nearby thunderstorms. Wait 30 minutes after the last thunder before returning to activity.
Context & considerations
Tents, gazebos, trees and rock overhangs are not safe shelter. Hard-topped cars qualify; convertibles and motorcycles do not. Start retreating at thunder, not only after rain begins.
Research & references
US National Weather Service. Outdoor Lightning Safety: avoid open fields, hill/ridge tops, isolated tall trees, water, wet ropes and metal fences/poles; spread a stranded group out to reduce current passing between members, and wait 30 minutes after the final thunder. https://www.weather.gov/safety/lightning-outdoors